Die for making ice bags, etc.



Jufiy M, 1933, A D WALKER 133K743 DIE FOR MAKING ICE BAGS, ETC

Filed July 1, 1932 3 Sheets-Sheet l "Ill INVENTOR.

BY 3% W) MA TTORNEYS.

A. D. WALKER Jufiy 1 11, W33.

DIE FOR MAKING ICE BAGS, ETC

Filed July 1, 1932 3 Sheets-Sheet 2 1N VEN TOR.

19/6 er'f Milt/1 #12, A TTORNEYS.

July 11, 1933. A WALKER 1,917,743

DIE FOR MAKING ICE BAGS, ETC

Filed July 1, 1952 s Sheets-Sheet 3 11v VEN TOR, fllfi arffl. 746/4294Patented July 11, 1933 PATENT orr ce ALBERT D. WALKER, OF MIDDLEBORO,MASSACHUSETTS DIE FOR MAKING ICE BAGS, ETC.

Application filed July 1,

This invention relates to dies for making ice bags, ice caps, etc.

An object of the invention is the production of simple and eflicientmeans for tightly sealing the metal neck and fabric or rubber part of anice bag or ice cap together.

Another object of the invention is the production of dies for making mytype of a tight seal around my style of a metal neck of the rubber orother suitable fabric ice bag or ice cap where the metal oins the neckportion of the bag.

With the foregoing and other objects in View, my invention comprisescertain novel constructions, combinations and arrangements of parts aswill be hereinafter fully described, illustrated in the accompanyingdrawings, and more particularly pointed out in the appended claims.

In the drawings:

Figure 1 is a vertical sectional view of a mechanism constructed inaccordance with the present invention.

Figure 2 is a vertical sectional view of another embodiment of theauxiliary unit,

showing the primary unit in dotted lines.

Figure 3 is a vertical sectional view of another embodiment of theauxiliary unit, while Figure 4 is a top plan View of the die thereof.

Figure 5 is a perspective view of another embodiment of the auxiliaryunit, while Figure 6 is a sectional view taken on line 6-6, Figure 5 andlooking in the direction of the arrows.

Figure 7 is a view in elevation of my me Figure 8 is a perspective newof my ice cap.

Referring to the drawings by numerals, 1-

designates the male or primary unit and 2 the female or auxiliary unitof the mechanism. The primary unit 1 is carried by the head 3 of a powerpress, while the auxiliary unit 2 is supported upon the base l of thepower press. I

The primary unit 1 comprises a stripper bar 5, mounted on the head 3,and is capable of an upward and a downward movement on 1932. Serial No.620,555

punch 7 is r a sleeve-like body 9 provided at its lower end with ahorizontal annular flange 10 and at its upper end with a plate-like top11. An annular groove 12 is formed in the lower face of flange 10, intowhich groove 12 fits the annular bead on the metal ring shown resting onthe upper surface of the die 19. It is necessary to preserve thisannular bead, by such fitting, as said bead is necessary to my finishedice bag or ice cap. Rivet bolts 13 are slidably mounted upon extension6; these bolts have the top plate 11 of the stripper 8 mounted on theirlower headed ends 14, Fig. 1, whereby the stripper is fixedly secured tobolts 13. The upper or inner ends of bolts 13 extend into the spacebetween extension 6 and bar 5, with nuts 15 threaded thereon. The innerends of bolts 13 are adapted to strike against stripper bar 5, for thepurpose hereinafter described.

The auxiliary unit 2 shown in Fig. 1 comprises a swinging die bed 16,which is held in place upon base t by means of an anchor bolt 17 thisbolt 17 allows the die bed to swing out from under the primary unit 1,while the ice bag is being positioned on the auxiliary unit, or removedentirely therefrom. The die bed 16 is provided with an upstandingportion 18 in which is securely seated closirw-in die 19. The die 19 isinternally tapered or bevelled at 20. A stop 21 is fastened to the topof base 4 against which the die bed 16 strikes when the die bed is movedto its proper position upon base 4, under the primary unit 1.

The operation of the embodiment shown in Fig. 1 is as follows: An icebag 22 with the neck and ring already in place but not closed in, is putin the die 19, while the die bed 16 is swung outwardly, and then the diebed is swung inwardly until it engages stop 21. When the neck and ring,with the bag, are

placed in the die 19 just before the press is tripped, the ring 20 atthe bottom has about the same or a slightly smaller diameter than theupper diameter of the opening in die 19. All is then in readiness totrip the press. Upon tripping the press, the primary unit 1 comes downand punch 7 slides snugly into the metal neck 23 of the bag 22 until itis protecting all the neck threads 24c. While the punch 7 is thusentering, stripper 8 has engaged the top of the metal neck 23 and issliding back along the punch 7 until it is brought up against the headof the press which condition will occur at the same instant that thepunch 7 has completely protected the neck threads 23. The whole primaryunit 1 then continues downward, taking with it the ice bag into thebevelled portion 20 of the die 19, forcing the metal ring to close inagainst the rubber material as shown in Figs. 1 and 2; the inside punch7 in the meantime holds the metal neck in place. It is to be understoodthat at the beginning of the stroke, the stripper bar 5 rests uponstripper bolts 13, and as stripper body 9 moves back along the punch 7,the bolts 13 naturally push the stripper bar 5 back the amount equal tothe extent that the punch 7 goes into the neck of the bag, Figs. 1 and2. Then on the return stroke, the bag 22 is drawn back with the punch 7almost to the full extent of the return stroke of the head 3. Beforereaching its full extent, however, stripper bar 5 engages the regularadjustable stripper stops (not shown) on the press. Stripper sleeve orbody 9 not being permitted to move any further in an upward direction,necessarily remains stationary while the head 3 continues to the fullextent of the backward stroke, and withdrawing punch 7 from the neck ofthe bag 22. Die bed 16 is then drawn back, away from under the primaryunit, and the bag is then removed or withdrawn. It is noted that aportion 'of the metal neck 23 fits snugly into the annular groove 12 ofthe stripper 8, during the operation.

Figure 2 represents the punch 7 (dotted lines) at the fullest extent ofthe downward stroke. The stripper plate 11 is then against head 3. Theoperation is as follows: Because the ring used on this type of ice capis much narrower than the one used in the other type bag, the distancewhich the neck has to travel downward in die 36 is much shorter. Whenthe metal neck and ring are put together and placed in the die 34, thering, because it is absolutely straight at this stage, can only beforced by hand about half way into the curved surface of die 34 andleaving the rest of the distance to be forced by the overhead assembly.From this point it will be noted that punch 7 enters into the neck onthe downward stroke, practically, but not quite, to the full extent ofthe neck. By this time, the stripper has gone back to the face of thehead 3, which, by the way, is almost at the lowest point in its downwardmovement. The whole assembly, therefore, moves to the full extent of thestroke. This last distance is very short for, as can be readily seen,that due to the curved surface of the die 34, the ring closes in veryrapidly in the remaining short downward movement.

In the embodiment shown in Fig. 5 of the auxiliary unit, the die bed 25is provided with an upstanding platform 26, which platform is alsoprovided, at two of its edges, with upstanding parallel flanges 27; theinner face of each flange 27 is inclined at 28; the two faces 28constitute a dovetail effect. A two part die 29 is positioned betweenflanges 27 with their ends bevelled to correspond with the faces 28. Atone end of flanges 27 is placed a transverse plate 30, which is held inposition by screws 31. On the platform 26 is an eccentric cam 32; thiscam 32 is provided with handle 33. The cam normally presses against oneof the sections of the die 29, holding the sections tightly in position,bearing against transerse plate 30. This die or auxiliary unit is forclosing in the metal part of ice bags that employ a less pliable rubberfabric or material. The same primary unit 1, as shown in Fig. 1, isemployed in conjunction with this auxiliary unit Because of the muchharder blow that this material requires, the bag instead of beingwithdrawn by he punch 7, as in the case described in connection with theembodiment shown in Fig. 1, it sticks in the lower die 29. In order toeasily withdraw the work, this type of an auxiliary unit was devised;this method allows the sections of the die 29 to spread when the punchis withdrawn, thus permitting the completed ice bag to be taken from theauxiliary unit, in the same manner specified in connection with theen'ibodiinent shown in Fig. 1.

In the embodiment shown in Figs. 2 to 4, the same primary unit 1 isemployed. The auxiliary unit of this embodiment is supported by the base4, and Comprises a two part or sectional die 34, which is internallybevelled at A die holder 36 is placed upon the sections of the die 34,holding the same together. This device is adapted for attaching themetal neck and ring to the flat or moulded type of ice cap. Theoperation I is as follows: The ice cap 37 is placed on the base 4 withthe die 34 thereon. as shown in Fig. 2; this placing is done by theoperator. The rubber neck of the cap slides into the die 34- to itsfullest extent. The metal neck and ring are then put together and placedin the die 34, letting the rubber neck protrude up into and between theneck and ring. The press is then released and iii) the primary unit 1performs the same function as in the other embodiments, except that itdoes not bring back the completed cap with it, because of the fact thatthis moulded rubber does not require a strenuous blow. The neck,therefore, does not cling to the punch 7. The cap 37 now beingcompleted, holder 36 is pried oh, by hand, off of the die 34; this die34 is then separated and finished cap taken off the die bed.

In the following claims, the base 4, or that which carries or supportsthe auxiliary unit may be referred to as a support.

I have found from extensive use that my embodiments perform in actualpractice their results or operation in an exceedingly efiicient manner.

l/Vhile I have described the preferred em bodiments of my invention andillustrated the same in the accompanying drawings, certain minor changesor alterations may appear to one skilled in the art to which thisinvention relates during the extensive manufacture of the same, and I,therefore, reserve P the right to make such changes or alterations asshall fairly fall within the scope of the appended claims.

lVhat I claim is:

1. In a mechanism of the class described, the combination of a headprovided with a horizontal extension, a stripper bar a considerabledistance above said extension and on said head, a punch in the center ofsaid head, a stripper slidably mounted on said punch, said strippercomprising a sleevelike body provided at its lower end with a horizontalannular flange, said flange provided with an annular groove in its underface, said sleeve-like body provided at its inner or upper end with aplate-like top, vertical bolts having said plate-like top on their lowerends, said bolts loosely extend ing through said horizontal extension,nuts on the upper ends of said bolts between said horizontal extensionand said stripper bar, said bolts adapted to have their inner endsstrike against said stripper bar for causing a bag to be knocked offsaid punch, and a bag-carrying auxiliary unit positioned under said headand punch and adapted to cooperate therewith, substantially as shown anddescribed.

2. In a mechanism of the class described, the combination with a headprovided with extensions, of a single stripper bar on said head parallelto said extensions, a solid punch depending from said head, a stripperlongitudinally movable of and mounted on said solid punch, said stripperprovided with means parallel with said extensions and with said stripperbar, means attached to said parallel portions of said stripper andextending through the extensions of said head and normally free from butbeing capable of engaging said single stripper bar for moving saidstripper downward upon said punch, and an auxiliary die unit under saidhead and punch.

3. In a mechanism of the class described, the combination of a headprovided with an extension, a solid depending punch secured upon saidhead, a single stripper bar above said extension of the head, a stripperslidably mounted on said solid punch, bolt-like members attached to saidstripper and extending through the extension of the head and free attheir inner ends from said single stripper bar but being adapted toengage said stripper bar for moving said stripper for kicking a bag orcap off the outer end of said punch, and an auxiliary die unit undersaid head and punch.

4. In a die mechanism for making ice bags, the combination of adepending head provided with a broad extension at its lower end, a soliddepending punch extending only from the center of said head andextension, a single stripper bar of the same width as said extension andpositioned on said head above said extension, a stripper slidablymounted on said solid punch and provided with a plate-like top ofsubstantially the same width as said extension and stripper bar, boltsfixedly secured at their lower ends to said plate-like top and extendingthrough said extension of the head, and said bolts free from saidstripper bar but adapted to engage said stripper bar at their inner endsfor kicking a bag or cap off the outer end of said punch.

In testimony whereof I hereunto affix my signature.

ALBERT D. WALKER.

